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Finding the Fourth Proportional to 609.75, 914.63 and 225.09

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Solution

The fourth proportional to 609.75, 914.63 and 225.09 is: 337.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.75 : 914.63 = 225.09 : x
  2. Step 2: Convert to fraction form
    609.75/914.63 = 225.09/x
  3. Step 3: Cross multiply
    609.75x = 914.63 × 225.09
  4. Step 4: Simplify right side
    609.75x = 205,872.94
  5. Step 5: Solve for x
    x = 205,872.94/609.75
  6. Step 6: Final answer
    x = 337.64

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.